CN105425427A - Method of eliminating correlation of Faraday rotator mirror rotation angle and wavelength and temperature and Faraday rotator mirror thereof - Google Patents
Method of eliminating correlation of Faraday rotator mirror rotation angle and wavelength and temperature and Faraday rotator mirror thereof Download PDFInfo
- Publication number
- CN105425427A CN105425427A CN201510649888.6A CN201510649888A CN105425427A CN 105425427 A CN105425427 A CN 105425427A CN 201510649888 A CN201510649888 A CN 201510649888A CN 105425427 A CN105425427 A CN 105425427A
- Authority
- CN
- China
- Prior art keywords
- light
- birefringece crystal
- wavelength
- faraday rotator
- angle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/09—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on magneto-optical elements, e.g. exhibiting Faraday effect
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The invention provides a Faraday rotator mirror for eliminating a correlation of the Faraday rotator mirror rotation angle and the wavelength and temperature. The component of polarized light in the dispersion direction of the rotation angle produced by deviating the rotation angle by 90 degrees after being acted by the Faraday rotator mirror is removed, at various temperatures, the rest of the light of all wavelengths is made to be in a linear polarization state in the same single direction, the influence, caused by correlation of the wavelength and temperature of the Faraday rotator mirror, of the Faraday rotator mirror on the rotation angle of the polarized light is eliminated, and the polarization state of output light of the Faraday rotator mirror is irrelevant to the wavelength and temperature. The Faraday rotator mirror for eliminating the correlation of the Faraday rotator mirror rotation angle and the wavelength and temperature has the advantage that the influence of correlation, caused due to any kinds of optically active crystals, of Faraday rotator mirror rotation angle dispersion and the temperature can be eliminated, and the Faraday rotator mirror for eliminating the correlation of the Faraday rotator mirror rotation angle and the wavelength and temperature is suitable for all occasions using the Faraday optically active crystals.
Description
Technical field
The invention belongs to Fibre Optical Sensor and optical-fibre communications field, relate more specifically to a kind of faraday rotation mirror eliminating faraday rotation mirror rotation angle and wavelength and temperature correlation.The domestic priority that the application claims applying date is 2014.10.14, application number is the patent of invention of 201410539249.X.
Background technology
Optical signal demodulation, in order to reach high resolution, generally all uses interfere type demodulation method, and the development of fibre optic interferometer is a gordian technique.Polarization maintaining optical fibre price is high, and polarization-maintaining coupler is not also very perfect in some gordian technique, limits its application.General single mode fiber is due to birefringence effect, and the polarization state meeting random variation of interferometer two-arm, cause the visibility exporting interference signal to change, this is polarization inducement signal fading effect thereupon.
When light signal carries out interfere type demodulation, the fluctuation of visibility of interference fringes will directly affect the stability of demodulation result, and therefore, the Polarization Control of fibre optic interferometer has become the key issue affecting optical signal demodulation device.The method of multiple elimination polarization inducement signal decline has been proposed both at home and abroad, wherein utilize faraday rotation mirror to carry out birefringence-compensated method and can obtain good depolarized effect, notification number is that the Chinese invention patent of CN103412371A discloses such faraday rotation mirror.But the anglec of rotation dispersion intrinsic due to Faraday rotation crystalline material and temperature correlated characteristic, traditional faraday rotation mirror makes above-mentioned compensation method cannot to broad band wavelength and large-temperature range effectively simultaneously.The harmful effect that the wavelength temperature characteristic that the patent of invention that public announcement of a patent application number is CN102906629A utilizes the methods such as birefringence element divides polarized light, lens light beam crosses successfully to overcome Faraday rotation crystal is brought, but, when the light beam of two beam energy Gaussian distribution separate in space not enough time, the conjunction bundle mode of lens can cause extinction ratio not high, in order to obtain High Extinction Ratio, patent CN102906629A requires that the space displacement amount of two-beam is greater than the mode field diameter of more than twice, and this can increase device size and cost again.Therefore invent a kind of novel with wavelength and the irrelevant faraday rotation mirror of temperature be highly profitable.
Summary of the invention
Object of the present invention is exactly the defect for prior art, rotation angle after Faraday rotator effect is departed from 90 degree and the polarized light component along anglec of rotation dispersion direction that produces is eliminated, the light of each wavelength be left is made all to have identical linear polarization, thus eliminate the temperature variant impact of the anglec of rotation that the faraday rotation mirror that caused by the Faraday rotator anglec of rotation and wavelength, temperature correlation causes with wavelength variations and temperature the anglec of rotation of light, faraday rotation mirror and wavelength are had nothing to do, temperature independent; Improve the extinction ratio of faraday rotation mirror simultaneously, reduce Insertion Loss, minification and reduce costs.
The good technical scheme of the present invention is: light path inputs coupling element through light, polarizing beam splitter, birefringece crystal light beam cross device, Faraday rotator, catoptron, Faraday rotator, birefringece crystal light beam cross device, polarizing beam splitter input coupling element to light.Be polarized two-beam that optical splitter separates through birefringece crystal light beam cross the deviation effect of crossing of device and catoptron reflect after two-beam along the road of the other side through reverse transfer, the electric field oscillation face of twice two-beam after Faraday rotator rotates close to 90 degree, after oppositely entering polarizing beam splitter, two-beam is reconsolidated by space, two-beam rotation angle departs from 90 degree of polarized component light along anglec of rotation dispersion direction produced and is then widened transmission of angle and distance by space, cannot transmit along main optical path, eliminate rotation angle depart from 90 degree and the polarized light component along anglec of rotation dispersion direction produced on the impact of main optical path polarization state, achieve various wavelength and all there is identical polarization state output at various temperatures.
Faraday rotator of the present invention is the optical device utilizing magneto-optic effect to be rotated in polarisation of light direction.Faraday rotator usually comprises nonreciprocity magneto-optical crystal and provides the permanent magnet of saturation magnetic field for crystal.Faraday rotator of the present invention can be made up of the Faraday magnetic optic crystals of two kinds of any thickness, but the anglec of rotation accumulation sum necessarily meeting these two kinds of thickness Faraday magnetic optic crystals of same light beam process is about 90 degree, just can realize the technical program.
Polarizing beam splitter of the present invention is polarization spectro optical interference film element or birefringece crystal element or birefringece crystal composite component, include but not limited to MacNeal (MacNeille) optical thin film polarization device, Wollaston (Wollaston) prism polarizers, two Wollaston prism (DoubleWollastonprism) polarizer, light beam deviator (PBDPolarizationBeamDisplacer), Lip river breast (Rochon) prism, Niccol (Nicol) prism, birefringent wedge gusset plate (BirefringentCrystalWedge), Senarmont prism (SenarmontPrism) or promise MAERSK prism (NomarskiPrism).
Birefringece crystal light beam described in the technique scheme device that crosses is birefringece crystal element, or birefringece crystal composite component, include but not limited to Wollaston (Wollaston) prism, two Wollaston prism (DoubleWollastonprism), light beam deviator (PBDPolarizationBeamDisplacer), Lip river breast (Rochon) prism, Niccol (Nicol) prism, birefringent wedge gusset plate (BirefringentCrystalWedge), Senarmont prism (SenarmontPrism) or promise MAERSK prism (NomarskiPrism).
The cross birefringece crystal element of device or birefringece crystal composite component of described birefringece crystal light beam only produces different deviation effects to different polarization states, therefore the degree that overlaps of this deviation effect to different polarization states and the energy distribution of different polarization states light beam in space has nothing to do, two bundle crossed polarized lights can not affect deviation polarisation of light extinction ratio and light path energy loss in the coincidence degree in space, as long as the transmission direction of two-beam has certain angle, it just can obtain very high polarization extinction ratio, polarization extinction ratio only depends on the extinction ratio of birefringece crystal itself.Thus easily High Extinction Ratio can be manufactured, undersized faraday rotation mirror.
Isotropic polarization lens element that has nothing to do then is difficult to have above-mentioned advantage.The light beam of the lens device that crosses requires that two bundle crossed polarized lights are parallel to each other incidence, the light of beam energy lap can not realize optical path alignment, also can return along original optical path, the energy that these original optical paths return will reduce extinction ratio, and therefore lens depend on the space distribution of luminous energy as the light beam faraday rotation mirror extinction ratio that device forms that crosses.For obtaining higher extinction ratio, the light beam of lens crosses two bundle crossed polarized lights that device requires spatially to have separated at a distance of enough space displacement amounts, such as needs to exceed more than the mode field diameter twice of Gaussian distribution.The extinction ratio of faraday rotation mirror is limited by the space displacement amount size of two bundle crossed polarized lights, uses the birefringent material of large-size could obtain the displacement of larger crossed polarized light.
The better technical scheme of the present invention is: light is incident from light input coupling element, successively through polarizing beam splitter and birefringece crystal light beam cross device composite component, Faraday rotator, catoptron, Faraday rotator, polarizing beam splitter and birefringece crystal light beam cross device composite component, input the former road of coupling element by light and oppositely export.Be polarized optical splitter and birefringece crystal light beam cross device composite component deviation cross the two-beam that separates after catoptron reflection two-beam along the path reverse transfer of the other side, the electric field oscillation face of twice two-beam after Faraday rotator rotates close to 90 degree, oppositely enter polarizing beam splitter and the birefringece crystal light beam two-beam after device composite component that crosses to be reconsolidated by space, in two-beam, rotation angle departs from 90 degree of polarized component light along anglec of rotation dispersion direction produced and is then widened angle and distance by space, cannot transmit along main optical path, eliminate rotation angle depart from 90 degree and the polarized light component along anglec of rotation dispersion direction produced on the impact of main optical path polarization state, achieve at various temperatures, various wavelength all has identical polarization state and exports.
Described polarizing beam splitter and the birefringece crystal light beam device composite component that crosses is that polarizing beam splitter and birefringece crystal light beam cross the composite component of both devices function, successively can realize the polarization spectro of light beam and the effect of crossing of polarization deviation, element includes but not limited to promise MAERSK rib (NomarskiPrism) or Wollaston prism.
Described promise MAERSK prism is the composite crystal glued together by two pieces of birefringece crystal angle of wedge blocks, and compact conformation, is applied to differential interference phase-contrast microscope more.Promise MAERSK prism revises on the basis of Wollaston prism, is also called the Wollaston prism (ModifiedWollastonPrism) of amendment.Be called the first birefringece crystal angle of wedge block and the second birefringece crystal angle of wedge block successively along direction of beam propagation, the cemented surface between the first birefringece crystal angle of wedge block and the second birefringece crystal angle of wedge block is called promise MAERSK prism internal interface.First birefringece crystal angle of wedge block and the second birefringece crystal angle of wedge block can be the angle of wedge blocks at right angle, also can be the angle of wedge block of on-right angle, the angle of wedge size of first and second birefringece crystal angle of wedge block can be identical, also can be different, both thickness can be identical, also can not be identical, the optical axis of the first birefringece crystal angle of wedge block and the second birefringece crystal angle of wedge block is orthogonal, promise MAERSK prism has multiple combination form, can be that the optical axis of crystal of the first birefringece crystal angle of wedge block is positioned at the identical plane of incidence or the combination of plane of refraction perpendicular to the optical axis of crystal of the plane of incidence or plane of refraction and the second birefringece crystal angle of wedge block that include promise MAERSK prism internal interface normal, also can be the optical axis of crystal of the first birefringece crystal angle of wedge block optical axis of crystal that is positioned at the plane of incidence that includes promise MAERSK prism internal interface normal or plane of refraction and the second birefringece crystal angle of wedge block perpendicular to the combination of the identical plane of incidence or plane of refraction, crystal can be positive uniaxial crystal, also can be uniaxial negative crystal, be positioned at and include the plane of incidence of promise MAERSK prism internal interface normal or the optical axis of crystal of plane of refraction and become certain oblique angle with institute transmitting beam at the component electrical field direction of vibration of same level, now beam energy transmission direction is separated with wave normal direction.Light beam is with after specific incident angle incident promise MAERSK prism, and promise MAERSK prism can realize the complex function that the first angular separation of two mutually orthogonal bunch polarized lights crosses again.
The cross effect of promise MAERSK prism to two bundle polarized lights only depends on institute's deviation polarisation of light direction, the Gaussian beam energy space restrainting polarized light with two distributes irrelevant, even if the energy space of this two-beam has coincidence, as long as the transmission direction of two-beam has certain angle, it just can obtain very high polarization extinction ratio, the polarization extinction ratio of promise MAERSK prism only depends on the extinction ratio of birefringece crystal itself, and the extinction ratio of the faraday rotation mirror that promise MAERSK prism is formed is not by ordinary light and extraordinary ray Gaussian beam energy space distribution limitation.Thus easily High Extinction Ratio can be manufactured, undersized faraday rotation mirror.
Birefringent crystal material in the present invention can be positive uniaxial crystal, includes but not limited to yttrium vanadate YVO4, rutile Rutile, quartzy Quartz, can be also uniaxial negative crystal, include but not limited to lithium niobate LiNbO3, kalzit CaCO3.
The present invention can eliminate the anglec of rotation dispersion of the nonreciprocal gyrotropi crystal of faraday and the anglec of rotation and temperature correlation completely on the impact of faraday rotation mirror rotation angle, and easily manufacturing dimension is little, and cost is low, the faraday rotation mirror that extinction ratio is high.
Accompanying drawing explanation
Fig. 1 is the angular dispersion curve map of faraday's crystal
Fig. 2 is the angle temperature dependency curve figure of faraday's crystal
Fig. 3 .1 is one of structural representation of positive uniaxial crystal promise MAERSK prism and light path thereof
Fig. 3 .2 is the structural representation two of positive uniaxial crystal promise MAERSK prism and light path thereof
Fig. 3 .3 is one of structural representation of uniaxial negative crystal promise MAERSK prism and light path thereof,
Fig. 3 .4 is the structural representation two of uniaxial negative crystal promise MAERSK prism and light path thereof,
Fig. 3 .5 is one of structural representation of large angle incidence positive uniaxial crystal Wollaston prism and light path thereof
Fig. 3 .6 is the structural representation two of large angle incidence positive uniaxial crystal Wollaston prism and light path thereof
Fig. 4 is the light intensity Gaussian distribution schematic diagram of two bundle polarized orthogonal light
Fig. 5 is structural representation and the index path of embodiments of the invention 1
Fig. 6 is one of polarization state figure of the transmitting beam of the embodiment of the present invention 1
Fig. 7 is the polarization state figure bis-of the transmitting beam of the embodiment of the present invention 1
Fig. 8 is the polarization state figure tri-of the transmitting beam of the embodiment of the present invention 1
Fig. 9 is structural representation and the index path of embodiments of the invention 2
Figure 10 is structural representation and the index path of embodiments of the invention 3
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in detail:
Fig. 1 be nonreciprocity Faraday magnetic optic crystals under saturation magnetic field effect, its rotation angle to linearly polarized light and the dispersion relation of wavelength, under uniform temperature, wavelength is longer, and rotation angle is less.
Fig. 2 be nonreciprocity Faraday magnetic optic crystals under saturation magnetic field effect, its rotation angle to linearly polarized light and the relation of temperature, to certain wavelength, temperature is higher, and rotation angle is less.
Fig. 3 .1 is one of structural representation of positive uniaxial crystal promise MAERSK prism and light path thereof, promise MAERSK prism is made up of two pieces of positive uniaxial crystal angle of wedge blocks, light beam transmits from left to right, the optical axis of the first birefringece crystal angle of wedge block is positioned at the plane of refraction of paper, and become certain tiltedly angle with beam Propagation direction, the vertical paper of optical axis of the second birefringece crystal angle of wedge block; For the light beam of the vertical paper of linear polarization, its Energy Transfer direction overlaps with wave normal direction always; Linear polarization is parallel to the light beam of paper, in the first birefringece crystal angle of wedge block, its Energy Transfer direction is separated with wave normal direction, in the second birefringece crystal angle of wedge block, its Energy Transfer direction overlaps with wave normal direction, and two mutually orthogonal bunch polarized lights are first separated by promise MAERSK prism angle and are crossed.
Fig. 3 .2 is the structural representation two of positive uniaxial crystal promise MAERSK prism and light path thereof, promise MAERSK prism is made up of two pieces of positive uniaxial crystal angle of wedge blocks, light beam transmits from left to right, plane of refraction in the vertical paper of optical axis of the first birefringece crystal angle of wedge block, the optical axis of the second birefringece crystal angle of wedge block is positioned at paper, and becomes certain tiltedly angle with beam Propagation direction; For the light beam of the vertical paper of linear polarization, its Energy Transfer direction overlaps with wave normal direction always; Linear polarization is parallel to the light beam of paper, in the first birefringece crystal angle of wedge block, its Energy Transfer direction overlaps with wave normal direction, in the second birefringece crystal angle of wedge block, its Energy Transfer direction is separated with wave normal direction, and two mutually orthogonal bunch polarized lights are first separated by promise MAERSK prism angle and are crossed.
Fig. 3 .3 is one of structural representation of uniaxial negative crystal promise MAERSK prism and light path thereof, promise MAERSK prism is made up of two pieces of uniaxial negative crystal angle of wedge blocks, light beam transmits from left to right, the optical axis of the first birefringece crystal angle of wedge block is positioned at the plane of refraction of paper, and become certain tiltedly angle with beam Propagation direction, the vertical paper of optical axis of the second birefringece crystal angle of wedge block; For the light beam of the vertical paper of linear polarization, its Energy Transfer direction overlaps with wave normal direction always; Linear polarization is parallel to the light beam of paper, in the first birefringece crystal angle of wedge block, its Energy Transfer direction is separated with wave normal direction, in the second birefringece crystal angle of wedge block, its Energy Transfer direction overlaps with wave normal direction, and two mutually orthogonal bunch polarized lights are first separated by promise MAERSK prism angle and are crossed.
Fig. 3 .4 is the structural representation two of uniaxial negative crystal promise MAERSK prism and light path thereof, promise MAERSK prism is made up of two pieces of uniaxial negative crystal angle of wedge blocks, light beam transmits from left to right, plane of refraction in the vertical paper of optical axis of the first birefringece crystal angle of wedge block, the optical axis of the second birefringece crystal angle of wedge block is positioned at paper, and becomes certain tiltedly angle with beam Propagation direction; For the light beam of the vertical paper of linear polarization, its Energy Transfer direction overlaps with wave normal direction always; Linear polarization is parallel to the light beam of paper, in the first birefringece crystal angle of wedge block, its Energy Transfer direction overlaps with wave normal direction, in the second birefringece crystal angle of wedge block, its Energy Transfer direction is separated with wave normal direction, and two mutually orthogonal bunch polarized lights are first separated by promise MAERSK prism angle and are crossed.
When incident light is constant, the promise MAERSK prism of Fig. 3 .1, Fig. 3 .2, Fig. 3 .3, Fig. 3 .4 does 180 ° of rotations with z-axis respectively, can be formed respectively another kind of in form different, the first angular separation of in light beam two orhtogonal linear polarizaiton light can be made after the promise MAERSK prism that crosses again.
When incident light is constant, the promise MAERSK prism of Fig. 3 .1, Fig. 3 .2, Fig. 3 .3, Fig. 3 .4 does 180 ° of rotations with x or y-axis respectively, can be formed respectively another two kinds formal different, in light beam two orhtogonal linear polarizaiton angular can only be made to be separated and the promise MAERSK prism that no longer crosses, become polarization splitting prism.
Fig. 3 .5 is one of structural representation of large angle incidence positive uniaxial crystal Wollaston prism and light path thereof, Wollaston prism is made up of two pieces of positive uniaxial crystal angle of wedge blocks, light beam transmits from left to right, the optical axis of the first birefringece crystal angle of wedge block is positioned at the plane of refraction of paper, be parallel to the interface of air and crystal, and become certain tiltedly angle with beam Propagation direction, the vertical paper of optical axis of the second birefringece crystal angle of wedge block; For the light beam of the vertical paper of linear polarization, its Energy Transfer direction overlaps with wave normal direction always; Linear polarization is parallel to the light beam of paper, in the first birefringece crystal angle of wedge block, its Energy Transfer direction is separated with wave normal direction, and in the second birefringece crystal angle of wedge block, its Energy Transfer direction overlaps with wave normal direction.When large angle incidence Wollaston prism, the orthogonal linearly polarized light of two bundles experienced by fact the process identical with promise MAERSK prism, and two thus mutually orthogonal bunch polarized lights are first crossed by Wollaston prism angular separation again.
Fig. 3 .6 is the structural representation two of large angle incidence positive uniaxial crystal Wollaston prism and light path thereof, Wollaston prism is made up of two pieces of positive uniaxial crystal angle of wedge blocks, light beam transmits from left to right, plane of refraction in the vertical paper of optical axis of the first birefringece crystal angle of wedge block, the optical axis of the second birefringece crystal angle of wedge block is positioned at paper, be parallel to the interface of crystal and air, and become certain tiltedly angle with beam Propagation direction; For the light beam of the vertical paper of linear polarization, its Energy Transfer direction overlaps with wave normal direction always; Linear polarization is parallel to the light beam of paper, in the first birefringece crystal angle of wedge block, its Energy Transfer direction overlaps with wave normal direction, and in the second birefringece crystal angle of wedge block, its Energy Transfer direction is separated with wave normal direction.When large angle incidence Wollaston prism, the orthogonal linearly polarized light of two bundles experienced by fact the process identical with promise MAERSK prism, and two thus mutually orthogonal bunch polarized lights are first crossed by Wollaston prism angular separation again.
When incident light is constant, Fig. 3 .5, Fig. 3 .6 Wollaston prism does 180 ° of rotations with z-axis respectively, can be formed respectively another kind of in form different, the first angular separation of in light beam two orhtogonal linear polarizaiton light can be made after the Wollaston prism that crosses again.
When incident light is constant, Fig. 3 .5,, Fig. 3 .6 Wollaston prism does 180 ° of rotations with x or y-axis respectively, can be formed respectively another two kinds formal different, in light beam two orhtogonal linear polarizaiton angular can only be made to be separated and the Wollaston prism that no longer crosses, become polarization splitting prism.
Fig. 4 is the light intensity Gaussian distribution schematic diagram of two bundle polarized orthogonal light, illustrates two bundle directional lights luminous energy in the optical path and to partly overlap situation.
[embodiment 1]
The faraday rotation mirror irrelevant with wavelength and temperature in Fig. 5 comprises a single mode single optical fiber calibrator 11, a promise MAERSK prism 12, X1 is consistent with x-axis for its optical axis, and its optical axis X2 is in y-z plane, a Faraday rotator 34, dielectric optical thin film plane mirror 15.
From the light 100 of single mode single optical fiber calibrator 11 outgoing in Fig. 5, transmit along rectangular coordinate system z-axis, be mapped on promise MAERSK prism 12 and be divided into orthogonal two bunch polarized light extraordinary ray 111 and the ordinary lights 121 in polarization direction before this, converge again through promise MAERSK prism internal interface, via Faraday rotator 34, vibration plane all rotates about 45 degree, become bundle light 112 and 122, and intersect at plane mirror 15, light beam 112 and 122 becomes reflected light 113 and 123 respectively, light path there occurs mutual exchange, reflected light 113 and 123 second time along the transmission of z-axis negative direction passes through Faraday rotator 34, vibration plane also rotating Vortex about 45 degree again, accumulation rotates about 90 degree, light beam becomes 114 and 124, after entering promise MAERSK prism 12, light beam 124 is divided into ordinary light 125 and extraordinary ray 126 by promise MAERSK prism 12, light beam 125 is from the polarized component in the vertical y-z face in light beam 124, light beam 114 is divided into extraordinary ray 115 and ordinary light 116 by promise MAERSK prism 12, light beam 115 is from the polarized component in y-z face in light beam 114, light beam 116 and 126 is spatially merged, light beam 199 is become after leaving promise MAERSK prism 12, light beam 115 and 125 has then spatially separated distance, deviate from main beam 199, final beam 199 is coupled to single mode single optical fiber calibrator 11.
Promise MAERSK prism 12 in the present embodiment serves polarizing beam splitter and birefringece crystal light beam simultaneously and to cross the compound action of device function, is that polarizing beam splitter and birefringece crystal light beam cross device composite component.The faraday rotation mirror volume of the present embodiment is little, and extinction ratio is high.
The transmitting procedure position (A) of light in Fig. 5, (B), (C), (D), (E), polarization state corresponding to (F) cross-section successively in Fig. 6, Fig. 7, Fig. 8 corresponding sequence number figure in indicate.
The faraday rotation mirror that the wavelength of the present embodiment and temperature have nothing to do departs from 90 degree and the polarized component along anglec of rotation dispersion direction produced by separating rotary corner, achieve the output of strict 90 degree of rotation angle polarized components, have nothing to do with the wavelength of Faraday rotator and temperature characterisitic.
[embodiment 2]
The faraday rotation mirror irrelevant with wavelength and temperature in Fig. 9 comprises a single mode single optical fiber calibrator 11, a light beam deviator 22, its optical axis X3 is in y-z plane, a Wollaston prism 23, the parallel x-axis of its optical axis X4, the parallel y-axis of optical axis X5, a Faraday rotator 34, dielectric optical thin film plane mirror 15.
From the light 300 of single mode single optical fiber calibrator 11 outgoing in Fig. 9, transmit along rectangular coordinate system z-axis, be mapped on light beam deviator 22 and be divided into orthogonal two bunch polarized light extraordinary ray 311 and the ordinary lights 321 in polarization direction, by converging after Wollaston prism 23, via Faraday rotator 34, vibration plane all rotates about 45 degree, become the two-beam 312 and 322 of convergence, and intersect at plane mirror 15, light beam 312 and 322 becomes reflected light 313 and 323 respectively, light path there occurs mutual exchange, reflected light 313 and 323 second time along the transmission of z-axis negative direction passes through Faraday rotator 34, vibration plane also rotating Vortex about 45 degree again, accumulation rotates about 90 degree, light beam becomes 314 and 324, after Wollaston prism 23, light beam 324 is polarized beam deviation device 22 and is divided into ordinary light 325 and extraordinary ray 326, light beam 325 is from the polarized component in the x-axis direction in light beam 324, light beam 314 is polarized beam deviation device 22 and is divided into extraordinary ray 315 and ordinary light 316, light beam 315 is from the polarized component in the y-z face in light beam 314, light beam 316 and 326 is spatially merged, light beam 399 is become after leaving light beam deviator 22, light beam 315 and 325 has then spatially separated distance, deviate from main beam 399, final beam 399 is coupled to single mode single optical fiber calibrator 11.
Wollaston prism 23 serves birefringece crystal light beam and to cross the effect of device.
The faraday rotation mirror that the wavelength of the present embodiment and temperature have nothing to do departs from 90 degree and the polarized component along anglec of rotation dispersion direction produced by separating rotary corner, achieve the output of strict 90 degree of rotation angle polarized components, have nothing to do with the wavelength of Faraday rotator and temperature characterisitic.
[embodiment 3]
The faraday rotation mirror irrelevant with wavelength and temperature in Figure 10 comprises a single mode single optical fiber calibrator 11, a Wollaston prism 42, the parallel y-axis of its optical axis X3, the parallel x-axis of optical axis X4, a Wollaston prism 43, the parallel x-axis of its optical axis X5, the parallel y-axis of optical axis X6,45 degree of rotation angle Faraday rotators 14, dielectric optical thin film plane mirror 15.
From the light 400 of single mode single optical fiber calibrator 11 outgoing in Figure 10, transmit along rectangular coordinate system z-axis, be mapped on Wollaston prism 42 and be divided into orthogonal two bunch polarized light extraordinary ray 411 and the ordinary lights 421 in polarization direction, by converging after Wollaston prism 43, therebetween via 45 degree of rotation angle Faraday rotators 14, extraordinary ray 411 and ordinary light 421 are via Faraday rotator 34, vibration plane all rotates about 45 degree, light beam becomes the two-beam 412 and 422 of convergence, and intersect at plane mirror 15, light beam 412 and 422 becomes reflected light 413 and 423 respectively, light path there occurs mutual exchange,
Along reflected light 413 and 423 second time of z-axis negative direction transmission by Faraday rotator 34, vibration plane also rotating Vortex about 45 degree again, accumulation rotates about 90 degree,
Light beam becomes 414 and 424, , after Wollaston prism 43, light beam 424 is divided into ordinary light 425 and extraordinary ray 426 by Wollaston prism 43, light beam 425 is from the polarized component in the x-axis direction in light beam 424, light beam 414 is divided into extraordinary ray 415 and ordinary light 416 by Wollaston prism 43, light beam 415 is from the polarized component in the y-z face in light beam 414, light beam 416 and 426 is spatially merged by Wollaston prism 42, main beam 499 is become after leaving Wollaston prism 42, light beam 415 and 425 has then spatially separated distance, deviate from main beam 499, last main beam 499 is coupled to single mode single optical fiber calibrator 11.
Wollaston prism 42 serves polarizing beam splitter effect, and Wollaston prism 43 serves birefringece crystal light beam and to cross the effect of device.
The faraday rotation mirror that the wavelength of the present embodiment and temperature have nothing to do departs from 90 degree and the polarized component along anglec of rotation dispersion direction produced by separating rotary corner, achieve the output of strict 90 degree of rotation angle polarized components, have nothing to do with the wavelength of Faraday rotator and temperature characterisitic.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solution of the present invention, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, equal Genus Homo is in the scope of technical solution of the present invention.
Claims (10)
1. the faraday rotation mirror had nothing to do with wavelength and temperature, it is characterized in that: light is incident from light input coupling element, to cross device, polarizing beam splitter through cross device, Faraday rotator, catoptron, Faraday rotator, birefringece crystal light beam of polarizing beam splitter, birefringece crystal light beam successively, input the former road of coupling element by light and oppositely export.
2. a kind of faraday rotation mirror had nothing to do with wavelength and temperature according to claim 1: it is characterized in that: described polarizing beam splitter is polarization spectro optical interference film element, birefringece crystal element or birefringece crystal composite component.
3. according to claim 1 a kind of with wavelength with the irrelevant faraday rotation mirror of temperature: to it is characterized in that: the described birefringece crystal light beam device that crosses is birefringece crystal element or birefringece crystal composite component.
4. a kind of faraday rotation mirror had nothing to do with wavelength and temperature according to claim 3: it is characterized in that: described birefringece crystal element or birefringece crystal composite component are Wollaston prisms, two Wollaston prism, light beam deviator, Rochon prism, Nicol, birefringent wedge gusset plate, Senarmont prism or promise MAERSK prism.
5. the faraday rotation mirror had nothing to do with wavelength and temperature, it is characterized in that: light is incident from light input coupling element, to cross device composite component through cross device composite component, Faraday rotator, catoptron, Faraday rotator, polarizing beam splitter and birefringece crystal light beam of polarizing beam splitter and birefringece crystal light beam successively, input the former road of coupling element by light and oppositely export.
6. according to claim 5 a kind of with wavelength with the irrelevant faraday rotation mirror of temperature: to it is characterized in that: described polarizing beam splitter and the birefringece crystal light beam device composite component that crosses is promise MAERSK prism or Wollaston prism.
7. a kind of faraday rotation mirror had nothing to do with wavelength and temperature according to claim 6: it is characterized in that: the first birefringece crystal angle of wedge block of described promise MAERSK prism and the optical axis of the second birefringece crystal angle of wedge block are orthogonal.
8. according to claim 6 a kind of with wavelength with the faraday rotation mirror that temperature is irrelevant: it is characterized in that: described promise MAERSK prism is that the optical axis of crystal of the first birefringece crystal angle of wedge block is positioned at and includes the plane of refraction of promise MAERSK prism internal interface normal and the combination of the optical axis of crystal of the second birefringece crystal angle of wedge block perpendicular to identical plane of refraction; Or first the optical axis of crystal of birefringece crystal angle of wedge block be positioned at the combination of identical plane of refraction perpendicular to the optical axis of crystal of the plane of refraction and the second birefringece crystal angle of wedge block that include promise MAERSK prism internal interface normal.
9. eliminate the method for faraday rotation mirror rotation angle and wavelength and temperature correlation for one kind, it is characterized in that: light path inputs coupling element through light, polarizing beam splitter, birefringece crystal light beam crosses device, Faraday rotator, catoptron, Faraday rotator, birefringece crystal light beam crosses device, polarizing beam splitter inputs coupling element to light, be polarized two light beams that optical splitter separates through birefringece crystal light beam cross device deviation cross and after catoptron reflection two-beam along the path reverse transfer of the other side, the electric field oscillation face of twice two-beam after Faraday rotator rotates close to 90 degree, after oppositely entering polarizing beam splitter, two-beam is reconsolidated by space, in two-beam, rotation angle departs from 90 degree of polarized component light along anglec of rotation dispersion direction produced and is then widened angle and distance by space, cannot transmit along main optical path, eliminate rotation angle depart from 90 degree and the polarized light component along anglec of rotation dispersion direction produced on the impact of main optical path polarization state, achieve at various temperatures, various wavelength all has identical polarization state and exports.
10. eliminate the method for faraday rotation mirror rotation angle and wavelength and temperature correlation for one kind, it is characterized in that: light path inputs coupling element through light, polarizing beam splitter and birefringece crystal light beam cross device composite component, Faraday rotator, catoptron, Faraday rotator, polarizing beam splitter and the birefringece crystal light beam device composite component that crosses inputs coupling element to light, be polarized optical splitter and birefringece crystal light beam cross device composite component deviation cross the two-beam that separates after catoptron reflection two-beam along the path reverse transfer of the other side, the electric field oscillation face of twice two-beam after Faraday rotator rotates close to 90 degree, oppositely enter polarizing beam splitter and the birefringece crystal light beam two-beam after device composite component that crosses to be reconsolidated by space, in two-beam, rotation angle departs from 90 degree of polarized component light along anglec of rotation dispersion direction produced and is then widened angle and distance by space, cannot transmit along main optical path, eliminate rotation angle depart from 90 degree and the polarized light component along anglec of rotation dispersion direction produced on the impact of main optical path polarization state, achieve at various temperatures, various wavelength all has identical polarization state and exports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510649888.6A CN105425427A (en) | 2014-10-13 | 2015-10-09 | Method of eliminating correlation of Faraday rotator mirror rotation angle and wavelength and temperature and Faraday rotator mirror thereof |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410539249.XA CN104317072A (en) | 2014-10-13 | 2014-10-13 | Faraday rotating lens irrelevant to wavelength and temperature |
| CN201410539249X | 2014-10-13 | ||
| CN201510649888.6A CN105425427A (en) | 2014-10-13 | 2015-10-09 | Method of eliminating correlation of Faraday rotator mirror rotation angle and wavelength and temperature and Faraday rotator mirror thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105425427A true CN105425427A (en) | 2016-03-23 |
Family
ID=52372324
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410539249.XA Pending CN104317072A (en) | 2013-12-04 | 2014-10-13 | Faraday rotating lens irrelevant to wavelength and temperature |
| CN201510649888.6A Pending CN105425427A (en) | 2014-10-13 | 2015-10-09 | Method of eliminating correlation of Faraday rotator mirror rotation angle and wavelength and temperature and Faraday rotator mirror thereof |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410539249.XA Pending CN104317072A (en) | 2013-12-04 | 2014-10-13 | Faraday rotating lens irrelevant to wavelength and temperature |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN104317072A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107065212A (en) * | 2017-01-24 | 2017-08-18 | 四川光陆通信技术有限公司 | Faraday rotation mirror and fibre optic interferometer |
| CN109581681A (en) * | 2019-01-30 | 2019-04-05 | 福建华科光电有限公司 | A kind of faraday rotation mirror unrelated with wavelength and temperature |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103777361A (en) * | 2013-12-04 | 2014-05-07 | 匠研光学科技（上海）有限公司 | Method for eliminating correlation between Faraday rotating mirror rotation angle and wavelength temperature, and rotating mirror |
| CN106444096A (en) * | 2016-10-19 | 2017-02-22 | 莱特尔科技（深圳）有限公司 | Faraday rotator mirror |
| CN106383380B (en) * | 2016-12-06 | 2019-10-08 | 四川光陆通信技术有限公司 | Faraday rotation reflector and fibre optic interferometer |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001349872A (en) * | 2000-06-06 | 2001-12-21 | Shimadzu Corp | Magnetic sensor |
| JP2008065111A (en) * | 2006-09-08 | 2008-03-21 | Namiki Precision Jewel Co Ltd | Polarization plane rotating miller |
| JP2010107490A (en) * | 2008-10-28 | 2010-05-13 | Adamant Kogyo Co Ltd | Reflector type optical magnetic field sensor |
| CN102906629A (en) * | 2010-05-27 | 2013-01-30 | Adamant工业株式会社 | Optical fibre birefringence compensation mirror and current sensor |
| CN102929001A (en) * | 2012-11-22 | 2013-02-13 | 珠海保税区光联通讯技术有限公 | Magneto-optical switch |
| CN103777361A (en) * | 2013-12-04 | 2014-05-07 | 匠研光学科技（上海）有限公司 | Method for eliminating correlation between Faraday rotating mirror rotation angle and wavelength temperature, and rotating mirror |
-
2014
- 2014-10-13 CN CN201410539249.XA patent/CN104317072A/en active Pending
-
2015
- 2015-10-09 CN CN201510649888.6A patent/CN105425427A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001349872A (en) * | 2000-06-06 | 2001-12-21 | Shimadzu Corp | Magnetic sensor |
| JP2008065111A (en) * | 2006-09-08 | 2008-03-21 | Namiki Precision Jewel Co Ltd | Polarization plane rotating miller |
| JP2010107490A (en) * | 2008-10-28 | 2010-05-13 | Adamant Kogyo Co Ltd | Reflector type optical magnetic field sensor |
| CN102906629A (en) * | 2010-05-27 | 2013-01-30 | Adamant工业株式会社 | Optical fibre birefringence compensation mirror and current sensor |
| CN102929001A (en) * | 2012-11-22 | 2013-02-13 | 珠海保税区光联通讯技术有限公 | Magneto-optical switch |
| CN103777361A (en) * | 2013-12-04 | 2014-05-07 | 匠研光学科技（上海）有限公司 | Method for eliminating correlation between Faraday rotating mirror rotation angle and wavelength temperature, and rotating mirror |
| CN104635347A (en) * | 2013-12-04 | 2015-05-20 | 匠研光学科技（上海）有限公司 | Faraday rotator mirror unrelated to wavelength and temperature |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107065212A (en) * | 2017-01-24 | 2017-08-18 | 四川光陆通信技术有限公司 | Faraday rotation mirror and fibre optic interferometer |
| CN107065212B (en) * | 2017-01-24 | 2023-05-23 | 四川光陆通信技术有限公司 | Faraday rotary mirror and optical fiber interferometer |
| CN109581681A (en) * | 2019-01-30 | 2019-04-05 | 福建华科光电有限公司 | A kind of faraday rotation mirror unrelated with wavelength and temperature |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104317072A (en) | 2015-01-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104635347A (en) | Faraday rotator mirror unrelated to wavelength and temperature | |
| CN105425427A (en) | Method of eliminating correlation of Faraday rotator mirror rotation angle and wavelength and temperature and Faraday rotator mirror thereof | |
| US20020005987A1 (en) | Polarization beam splitter or combiner | |
| CN102798989B (en) | The light partition method of Faraday method and device and this device of use and device | |
| EP0391703A2 (en) | Quasi-achromatic optical isolators and circulators using prisms with total internal fresnel reflection | |
| US8294980B2 (en) | Delay line interferometer with liquid crystal tuning element | |
| US5905823A (en) | Polarization independent optical nonreciprocal circuit based on even mode to odd mode conversion | |
| US8358466B2 (en) | Optical delay line interferometers with silicon dual mirror for DPSK | |
| WO2015081806A1 (en) | Wavelength-independent and temperature-independent faraday rotating mirror | |
| CN104216050A (en) | Polarization beam splitting and combining device | |
| CN206788411U (en) | Optical circulator | |
| CN102183849A (en) | High-speed and high-precision all-fiber polarization control device | |
| CN108628013A (en) | A kind of optical phase conjugation lens device | |
| CN201072456Y (en) | Four-port circulator | |
| JPH01287528A (en) | Optical isolator and optical circulator | |
| CN213276022U (en) | Polarization-independent optical circulator | |
| JPH0473712A (en) | Variable direction optical isolator | |
| CN108490649A (en) | It is realized using a quarter slide and polarizes unrelated lithium niobate electro-optic phase modulator | |
| JPH0391715A (en) | Optical isolator | |
| CN211123362U (en) | Novel single-shaft working isolator with high extinction ratio | |
| CN202018545U (en) | Free space (polarization dependent) mixed optical isolator | |
| CN108490648A (en) | It is realized using faraday rotation mirror and polarizes unrelated lithium niobate electro-optic phase modulator | |
| JPH02188715A (en) | Optical isolator | |
| CN101424762A (en) | Polarizer implementing method and use thereof | |
| JPH0743696Y2 (en) | Optical isolator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160323 |
|
| RJ01 | Rejection of invention patent application after publication |